﻿//Copyright 2008 Kristian Gundry And Rune Juhl-Petersen
//This file is part of Plain.

//Plain is free software: you can redistribute it and/or modify
//it under the terms of the GNU Lesser General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//any later version.

//Plain is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//GNU Lesser General Public License for more details.

//You should have received a copy of the GNU Lesser General Public License
//along with Plain.  If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.Text;
using log4net;

namespace Plain.Validation
{
    /// <summary>
    /// 
    /// </summary>
    [AttributeUsage(AttributeTargets.Property)]
    public class Range:Attribute,IValidationAttribute{
        private static ILog log = LogManager.GetLogger(typeof(Range));
        public Range(object to, object from){
            To = (IComparable)to;
            From = (IComparable)from;
        }
        /// <summary>
        /// Higher range
        /// </summary>
        public IComparable To   { get; set; }
        /// <summary>
        /// Lower range
        /// </summary>
        public IComparable From { get; set; }

        #region IValidationAttribute Members
        /// <summary>
        /// Validates
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="o"></param>
        /// <returns></returns>
        public bool Validate(object entity,object o){
            if (o != null && (To.CompareTo(o) >= 0 || From.CompareTo(o) <= 0)){
                log.Debug("Out of Range: " + o +"is not between " + To +" and " + From);
                return false;
            }
            return true;
        }

        #endregion
    }
}
